Gauge cock



June v2, 1925. 1,540,279

C.=RY'

GAUGE COCK Filed May '7, 1924 2 Sheets-Sheet 1 Hawk; Py

Patented .lune 2?, 1925,

CHARLES PRY, or ronrsiviourrr, or-iio.

naz?

Ganan ooox.

Application flied iviay 7,

f/'o all iii/0m t in my conectar; y

Be it known that I, @Haines Pinna oitizen oi.E the United States, resi noonohl in the county of Scioto and StateV ot" Ohio, have invented `certain new and usettul linproveinents in Gauge Cocks, et which the followingl a specitication.

This invention has to do with gaiigecoclts of vthe type :oininonly used withsteani boilers for testing the height et the water therein and an object Vof the invention is to provide an improved gauge cock with a shut.- otli valve .vliicli can be ground in under boiler pressure.

lt is the further object ot the invention to provide a gauge cool; et a novel and siniplitied construction presenting certain advantages in pointot use, facility of in'- speetioin and the inalring of repairs, ete.,

Y not possessed by gauge cocksin `presentldlith this object in view therefore. the construction is such that not only can any part be taken ott" and replaced j'withoiit discarding the gauge coolY `but there isprovided, also, a. clear channel to `the boiler for purposes ot Federal inspection, i" Vbeingl a eoninion vpractice to run 'a rod through to thefboiler. wi'ilen nialing'ysuch inspection. Y

In addition to the foregoing, the iiiven-.y tion provides a gauge cock of the type reiterred to'wherein ineans are provided to prevent the spindle ot' the shuteoft valve troni blowingout in packing under boiler pressure. i

lVit-h the above and other objects in view, the invention resides in the construction.v arrangement and combination o1 parts here inatter described and pointed 'out with re-- 'terence to the accompanying drawings, wherein Figure 1 is a longitudinal sectional viewof the assembled gauge cock.

Figure 2 is a sectional view of the gauge cook body. Figure 3 is an end view thereof. The ren'iaining vievvs are detail views. Describing the invention in detail, 10 desivnates the body of the gauge cock which 1 preferably inade ot' brass. The body is of 'slightly tapered formation and is provided with a thread 11 on one end for engagement in a correspondingly threaded orice in the wall ot the boiler to which the cock is applied. The other end of the body is threaded at 12 to engage the bonnet 13. Extendn ig at Forts4 1924. Serial No. 711,650.

bore or main water passage, 14:, which inmates, adjacent the bonnet end ot the body in an enlarged outlet chanib 15 han ing an outletV port 1G. This outlet port be threaded as shown to receive a plo; stopper when not in use'.v Attiliorunotion of the bore and the outlet chamber,l a'valve seat 17 4is provided' and beyond the bear ing 18 for the-main spindle valira the end et the gauge cock body is provided with. a concaved packing seat19. The spindle 20 of the main valve istapered at the end 21to tit the valve seat 17 and is of the reciprocating sci'ewoperated typea being. provided with a screw' 22 adapted to be engaged in the thread grooves?) bonnet'l. As shown7 in the. assembled view, suitable packing 24 is confined between the` bonnet and the ypacking seat 19'ot the gauge cock body. Spindle ASZOis turned :tor seating or unseating` the valve 21 by ineens of a hand wheel 25 mounted on the squared end 26 of the spindle and locked in place thereon by'nutQ. y 1

vThe bonnet ,'28 of the shut-ott valve is inade'l inone piece with the, gauge cock body-10, being` offset and inclined to the airis of the latter so that the bore 29 of theshut-olt valve intercepts the` water passage '14 fat an angle thereto, as illustrated.y At the point of interception, the water pas`v seat 30 against tapered end 31 packing nut 38 threadedly engaged withV the said cup-extension, as shown. Atrits inner end, the bushing is provided with a seat 89 for seating the valve disk 40, of the shut-oft valve spindle 32. It will thus be seen that spindle 82 has two seats. The purpose and advantage of this is to prevent any danger of the spindle blowing outl in packing under boiler pressure. The

spindle is turned to opened and closed po- Y sitions` by ineans of a special wrench applied to the squared end 4-1.

In the norinal use of the device, the shutofi? valve is usually .lett open so that when` the water in the boilerreaches the level ol of the r 11CTyr I let chamber by reason ot the valve 21k Qi y 1,540,279

the gauge cock, it enters thewvater passage 14 but 1s prevented from entering the ontbeing closed. This valve is opened only when .it is desiredto test the level ol the water in the boiler, to see it it has reached the height of the gauge coclr, as no water Will enter chamber 15 and escape thiough port 16, when valve 21 is open, unless it is at or above the level of the Water passage 14.

l/Vhen it is desired toV inspect or repair any part of the gauge cock valve, this can be done, Without disconnecting the gauge cock from the boiler, by simply closing the shutoii valve 31, and'thns'closing further flow of Water beyond the point indicated. Since all-the parts of bot-h valve assemblies are that any part;v

removable, it is apparent can be taken olil and replaced Without discarding the gauge cock. i Moreover, the straight bore 14 provides a clear channel to the boiler through which a. yrod may be runk as required orxFederal inspection and, it will benoted, the grouping and arrangement of thevarious parts of the device is such that the assembled gauge cock occupies a minimum oi' space, thereby further adapting it for use `Within the restricted space on the boiler head.

Having thus described kthe what is claimed, is

A gauge cock comprising a valve casing having a main bore extending longitudinally therethrough, said main bore having a relainvention,

tively large outer end and a relatively small inner end, .saidA bore further having an intermediate portion between its inner and onter ends ol: greater diameter than .the

outer end, said bore further having a valve seat at the inner end of said intermediate portion, a bonnet having a threaded bore and being screwed on the outer end ol the valve casing, a valve having a threaded. stein screwed in said bonnet and provided Withia portion adjacent the threads fitting the outer end 'of said bore, and a portion oi less diameter moving in the intermediate portion of said bore and provided withr :truste conical end to seat on said valve seat, said casing further having an auxiliary bore arranged at an acute angle With the iirst bore and intersecting the rear portion ot said first bore intermediate its ends, said second bore having relatively large inter'-V nal'ly threaded outer end, a relatively small inner end and an intermediate portion having a diameter intermediate the diameters of the inner and outer ends, the inner end of the second bore being of greater diameter than the inner end 'of vthe first bore, a conical valve seat being formed at the intersection of .the firstkand second bores, a i

threaded bonnet screwed into the outer end of the second bore, a threaded valve stein extendingthrough said bonnet, a valve carried by the inncrend of the last mentioned valve -stem and having a cylindrical body fitting closely in the inner end of the second bore and provided with a rusto conical extremity adapted to seat on the second valve seat, and a flange on' the second valve stein spaced from the body onsaid stein, said liange engaging against the second bonnet -upon the valve lbeing fully opened.

In testimony whereof I aix my signature. CHARLES PRY. 

